Range hood

Abstract

The utility model relates to a range hood, which comprises: a hollow shell, the front side wall of which is provided with a smoke inlet; the upper smoke barrier and the lower smoke barrier are arranged at the smoke inlet of the shell up and down, and the upper smoke barrier is arranged in a mode of rotating back and forth around a first axis extending left and right; the lower smoke baffle is arranged in a manner of rotating front and back around a second axis extending left and right; the output end of the driving mechanism acts on the upper smoke barrier and the lower smoke barrier and is used for driving the upper smoke barrier and the lower smoke barrier to rotate to a closed state for closing the smoke inlet or an open state for opening the smoke inlet, and in the open state, the first lower edge of the upper smoke barrier is located on the outer side of the smoke inlet, and the second lower edge of the lower smoke barrier is located on the outer side of the smoke inlet; the second upper edge of the lower smoke barrier is located on the inner side of the smoke inlet, and a first gap is formed between the second upper edge and the first lower edge of the upper smoke barrier. The second lower edge of the lower smoke baffle is located on the outer side of the smoke inlet, and a second gap is formed between the second lower edge and the lower side edge of the smoke inlet. The range hood can improve the oil smoke suction effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of kitchen appliances, and in particular relates to a range hood. Background Art

[0002] A range hood is a kitchen appliance that purifies the kitchen environment. In order to reduce the escape of oil smoke, existing range hoods, especially close-suction range hoods, are generally provided with a smoke baffle structure. When the range hood is turned off, the smoke baffle closes the air inlet. When the range hood is working, the smoke baffle deflects and opens the air inlet. Specifically, the structures disclosed in the Chinese utility model patent "Ranger Hood" with patent number 202322101902.1 (authorization announcement number CN220355500U) and the Chinese utility model patent "Side-suction Range Hood" with patent number 202222837318.8 (authorization announcement number CN218864276U).

[0003] However, existing range hoods still have the following problems: 1. The smoke shield will block the user's sight when opened; 2. Some oil smoke will escape, thus affecting the oil smoke extraction effect; 3. The smoke shield may hit cooking pots during the opening or closing process. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a range hood to improve the range hood absorbing effect in view of the current status of the prior art.

[0005] The technical solution adopted by the utility model to solve the above technical problems is: a range hood, comprising:

[0006] The shell is hollow inside and has a smoke inlet on its front side wall;

[0007] It is characterized by also including:

[0008] An upper smoke baffle having a first upper edge and a first lower edge, and a lower smoke baffle having a second upper edge and a second lower edge, are arranged one above the other at the smoke inlet of the housing, so that the upper smoke baffle is arranged in a manner that it can rotate forward and backward around a first axis extending left and right, and the first axis is adjacent to or coincides with the first upper edge of the upper smoke baffle; the lower smoke baffle is arranged in a manner that it can rotate forward and backward around a second axis extending left and right, and the second axis is arranged corresponding to the middle between the second upper edge and the second lower edge of the lower smoke baffle;

[0009] A driving mechanism, whose output end acts on the upper smoke baffle and the lower smoke baffle, is used to drive the upper smoke baffle and the lower smoke baffle to rotate to a closed state of closing the smoke inlet or an open state of opening the smoke inlet, and, in the open state, the first lower edge of the upper smoke baffle is located on the outside of the smoke inlet, the second upper edge of the lower smoke baffle is located on the inside of the smoke inlet, and a first gap is formed between the first lower edge of the upper smoke baffle to allow external oil smoke airflow to enter the shell; the second lower edge of the lower smoke baffle is located on the outside of the smoke inlet, and a second gap is formed between the lower side of the smoke inlet to allow external oil smoke airflow to enter the shell.

[0010] In this way, when in the open state, the oil fume air flow generated by cooking rises upward and can enter the shell through the second gap, and the oil fume air flow entering through the second gap can flow upward along the inner side surface of the lower smoke baffle, ensuring the oil fume absorption effect; the oil fume escaping near the second gap can flow upward along the outer side surface of the lower smoke baffle and enter the shell through the first gap, and the oil fume air flow entering through the first gap can flow upward along the inner side surface of the upper smoke baffle, ensuring the absorption of oil fume; at the same time, part of the oil fume generated by cooking can directly enter the shell through the first gap.

[0011] In addition, the upper and lower smoke baffles in the utility model in the open state can prevent the oil smoke airflow entering from the first gap from interfering with the oil smoke airflow entering from the second gap, thereby improving the oil smoke absorption effect. At the same time, it can reduce the obstruction of the user's vision and prevent the cooking pots from being hit during the opening or closing process.

[0012] Preferably, in the open state, the upper smoke baffle and the lower smoke baffle are parallel and arranged at an acute angle with the front side wall of the housing, so that the oil smoke airflow flowing upward along the outer side of the lower smoke baffle can smoothly enter the first gap and then flow upward along the inner side of the upper smoke baffle.

[0013] Preferably, in the open state, the distance between the second upper edge of the lower smoke baffle and the first lower edge of the upper smoke baffle is greater than the distance between the second lower edge of the lower smoke baffle and the lower side of the smoke inlet, that is, the air inlet area of ​​the first gap is greater than the air inlet area of ​​the second gap, ensuring that the oil smoke airflow generated by cooking can be more completely sucked into the housing to prevent the oil smoke from escaping.

[0014] Preferably, in the closed state, the first lower edge of the upper smoke baffle is opposite to, adjacent to or in contact with the second upper edge of the lower smoke baffle, and the second lower edge of the lower smoke baffle is opposite to, adjacent to or in contact with the lower side of the smoke inlet.

[0015] Furthermore, the first upper edge of the upper smoke baffle is adjacent to or in contact with the upper side of the smoke inlet in both the closed state and the open state.

[0016] In the above solution, preferably, the front side wall of the housing is inclined forward from bottom to top;

[0017] When in the open state, the upper smoke baffle plate tilts forward from bottom to top.

[0018] Thereby, the smoke shield can be prevented from blocking the user's sight.

[0019] In addition, the front side wall of the housing may also extend vertically.

[0020] Preferably, the distance between the first upper edge and the first lower edge of the upper smoke shield is smaller than the distance between the second upper edge and the second lower edge of the lower smoke shield, thereby further preventing the smoke shield from blocking the user's sight when in the open state.

[0021] In the above solutions, the driving mechanism can drive the upper smoke shield or the lower smoke shield to rotate independently, such as first driving the lower smoke shield to rotate to the open state, and then driving the upper smoke shield to rotate to the open state. In the present invention, preferably, the driving mechanism is arranged to synchronously drive the upper smoke shield and the lower smoke shield to rotate in the same direction and the same angle to the closed state or the open state.

[0022] Preferably, the upper smoke baffle is constrained on the housing through a first rotating shaft, and the central axis of the first rotating shaft is the first axis;

[0023] The lower smoke baffle is constrained on the housing through a second rotating shaft, and the central axis of the second rotating shaft is the second axis;

[0024] The output end of the driving mechanism acts on the first rotating shaft and the second rotating shaft.

[0025] Preferably, the driving mechanism comprises:

[0026] Motor;

[0027] A driving gear coaxially connected to the motor output shaft;

[0028] A first chain is wound around the outer circumference of the driving gear and the first driven gear coaxially connected to the first rotating shaft, and meshes with the driving gear and the first driven gear;

[0029] The second chain is wound around the outer periphery of the driving gear and the second driven gear coaxially connected to the second rotating shaft, and is meshed with the driving gear and the second driven gear.

[0030] In the utility model, a crank connecting rod can also be used to replace the chain.

[0031] Compared with the prior art, the advantages of the utility model are: by setting an upper smoke baffle, a lower smoke baffle and a driving mechanism, when in the open state, the oil smoke airflow generated by cooking rises upward and can enter the shell through the second gap, and the oil smoke airflow entering through the second gap can flow upward along the inner side surface of the lower smoke baffle, ensuring the oil smoke absorption effect; the oil smoke escaping near the second gap can flow upward along the outer side surface of the lower smoke baffle and enter the shell through the first gap, and the oil smoke airflow entering through the first gap can flow upward along the inner side surface of the upper smoke baffle, ensuring the absorption of oil smoke; at the same time, part of the oil smoke generated by cooking can directly enter the shell through the first gap.

[0032] In addition, the upper and lower smoke baffles in the utility model in the open state can prevent the oil smoke airflow entering from the first gap from interfering with the oil smoke airflow entering from the second gap, thereby improving the oil smoke absorption effect. At the same time, it can reduce the obstruction of the user's vision and prevent the cooking pots from being hit during the opening or closing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model (the upper smoke shield is in a closed state);

[0034] Figure 2 It is a cross-sectional view of an embodiment of the utility model (the upper and lower smoke shields are in a closed state);

[0035] Figure 3 This is a schematic diagram of the structure of an embodiment of the utility model (the upper smoke shield is in an open state);

[0036] Figure 4 It is a cross-sectional view of an embodiment of the utility model (the upper smoke baffle is in an open state);

[0037] Figure 5 This is a diagram of the use state of the embodiment of the utility model when absorbing oil smoke (top, the smoke baffle is in the open state). DETAILED DESCRIPTION

[0038] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0039] like Figures 1 to 4 FIG. 1 is a preferred embodiment of a range hood of the present invention, and the range hood comprises a housing 1, an upper smoke baffle 2, a lower smoke baffle 3, a driving mechanism 4 and a fan system 5. The side of the range hood facing the user is referred to as the front side.

[0040] The shell 1 is hollow inside and has a front side wall 10 that tilts forward from bottom to top. The front side wall 10 is provided with a smoke inlet 11 that penetrates the wall thickness. The top of the shell 1 also has a smoke exhaust port.

[0041] The fan system 5 is a prior art, which is arranged in the housing 1 and is used to drive the airflow from the smoke inlet 11 to the smoke exhaust outlet.

[0042] The upper smoke baffle 2 has a first upper edge 21 and a first lower edge 22 extending left and right, and the lower smoke baffle 3 has a second upper edge 31 and a second lower edge 32 extending left and right. The distance between the first upper edge 21 and the first lower edge 22 of the upper smoke baffle 2 is smaller than the distance between the second upper edge 31 and the second lower edge 32 of the lower smoke baffle 3. That is, the width of the upper smoke baffle 2 is smaller than the width of the lower smoke baffle 3. In this embodiment, the lengths of the upper and lower smoke baffles in the left and right directions are the same.

[0043] The upper smoke baffle 2 and the lower smoke baffle 3 are arranged one above the other at the smoke inlet 11 of the housing 1, and a first rotating shaft extending left and right is provided at a position adjacent to the first upper edge 21 on the inner side surface of the upper smoke baffle 2, and the central axis of the first rotating shaft is recorded as the first axis 20. The upper smoke baffle 2 is rotatably connected to the smoke inlet 11 of the housing 1 through the first rotating shaft, and can rotate forward and backward around the first axis 20. A second rotating shaft extending left and right is provided on the inner side surface of the lower smoke baffle 3, and the second rotating shaft is arranged corresponding to the middle part between the second upper edge 31 and the second lower edge 32 of the lower smoke baffle 3, and the central axis of the second rotating shaft is recorded as the second axis 30. The lower smoke baffle 3 is rotatably connected to the smoke inlet 11 of the housing 1 through the second rotating shaft, and can rotate forward and backward around the second axis 30.

[0044] The output end of the driving mechanism 4 acts on the upper smoke baffle 2 and the lower smoke baffle 3 to drive the upper smoke baffle 2 and the lower smoke baffle 3 to rotate to a closed state of closing the smoke inlet 11 or an open state of opening the smoke inlet 11, and,

[0045] like Figure 3 , 4 As shown, in the open state, the upper smoke baffle 2 tilts forward from bottom to top, the first upper edge 21 of the upper smoke baffle 2 is adjacent to or in contact with the upper side of the smoke inlet 11, the first lower edge 22 of the upper smoke baffle 2 is located outside the smoke inlet 11, the second upper edge 31 of the lower smoke baffle 3 is located inside the smoke inlet 11, and a first gap 301 is formed between the first lower edge 22 of the upper smoke baffle 2, so that the external oil smoke flow enters the shell 1; the second lower edge 32 of the lower smoke baffle 3 is located outside the smoke inlet 11, and a second gap 302 is formed between the lower side of the smoke inlet 11, so that the external oil smoke flow enters the shell 1. At the same time, the upper smoke baffle 2 and the lower smoke baffle 3 are parallel, and are arranged at an acute angle with the front side wall 10 of the shell 1. In addition, the distance between the second upper edge 31 of the lower smoke baffle 3 and the first lower edge 22 of the upper smoke baffle 2 is greater than the distance between the second lower edge 32 of the lower smoke baffle 3 and the lower side of the smoke inlet 11.

[0046] like Figure 1 ,2 As shown, in the closed state, the first upper edge 21 of the upper smoke baffle 2 is adjacent to or in contact with the upper side of the smoke inlet 11, the first lower edge 22 of the upper smoke baffle 2 is opposite to and adjacent to or in contact with the second upper edge 31 of the lower smoke baffle 3, and the second lower edge 32 of the lower smoke baffle 3 is opposite to and adjacent to or in contact with the lower side of the smoke inlet 11. At this time, the outer side surfaces of the upper and lower smoke baffles are substantially flush with the front side wall of the housing, and the upper and lower smoke baffles shield the smoke inlet 11.

[0047] In this embodiment, the driving mechanism 4 is arranged to synchronously drive the upper smoke baffle 2 and the lower smoke baffle 3 to rotate in the same direction and the same angle to a closed state or an open state. Specifically, the driving mechanism 4 includes a motor 40 fixed relative to the housing, a driving gear 43 coaxially connected to the output shaft of the motor 40, and a first chain 41 and a second chain 42. The first chain 41 is wound around the outer periphery of the driving gear 43 and the first driven gear coaxially connected to the first rotating shaft, and meshes with the driving gear 43 and the first driven gear; the second chain 42 is wound around the outer periphery of the driving gear 43 and the second driven gear coaxially connected to the second rotating shaft, and meshes with the driving gear 43 and the second driven gear. In this way, the motor can drive the upper and lower smoke baffles to rotate clockwise or counterclockwise to be in a closed state or an open state by rotating forward or reverse.

[0048] When in the open state, the oil smoke generated by cooking rises upward and can enter the shell 1 through the second gap 302, and the oil smoke airflow entering through the second gap 302 can flow upward along the inner side of the lower smoke baffle 3 to ensure the oil smoke absorption effect; the oil smoke escaping near the second gap 302 can flow upward along the outer side of the lower smoke baffle 3 and enter the shell 1 through the first gap 301, and the oil smoke airflow entering through the first gap 301 can flow upward along the inner side of the upper smoke baffle 2 to ensure the absorption of oil smoke; at the same time, part of the oil smoke generated by cooking can directly enter the shell through the first gap 301. For the flow path of the oil smoke airflow, please refer to Figure 5 Arrow in the.

[0049] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0050] The term "vertical" is also used in the specification and claims of the present utility model, which means basically along the up and down direction, and is not limited to the vertical direction only, and can also be slightly inclined relative to the vertical direction.

Claims

1. A range hood, comprising: The housing (1) is hollow inside and has a smoke inlet (11) formed on its front side wall (10); Features Also included are: An upper smoke baffle (2) having a first upper edge (21) and a first lower edge (22) and a lower smoke baffle (3) having a second upper edge (31) and a second lower edge (32) are arranged one above the other at the smoke inlet (11) of the housing (1), so that the upper smoke baffle (2) is arranged in a manner that it can rotate forward and backward around a first axis (20) extending left and right, and the first axis (20) is adjacent to or coincides with the first upper edge (21) of the upper smoke baffle (2); the lower smoke baffle (3) is arranged in a manner that it can rotate forward and backward around a second axis (30) extending left and right, and the second axis (30) is arranged corresponding to the middle between the second upper edge (31) and the second lower edge (32) of the lower smoke baffle (3); A driving mechanism (4), the output end of which acts on the upper smoke baffle (2) and the lower smoke baffle (3), and is used to drive the upper smoke baffle (2) and the lower smoke baffle (3) to rotate to a closed state of closing the smoke inlet (11) or an open state of opening the smoke inlet (11); and in the open state, the first lower edge (22) of the upper smoke baffle (2) is located on the outside of the smoke inlet (11), the second upper edge (31) of the lower smoke baffle (3) is located on the inside of the smoke inlet (11), and a first gap (301) is formed between the first lower edge (22) of the upper smoke baffle (2) to allow external oil smoke to enter the shell (1); the second lower edge (32) of the lower smoke baffle (3) is located on the outside of the smoke inlet (11), and a second gap (302) is formed between the second lower edge (32) of the lower smoke baffle (3) and the lower side of the smoke inlet (11) to allow external oil smoke to enter the shell (1).

2. The range hood according to claim 1, characterized in that: When in the open state, the upper smoke baffle (2) and the lower smoke baffle (3) are parallel to each other and are arranged at an acute angle with the front side wall (10) of the housing (1).

3. The range hood according to claim 2, characterized in that: When in the open state, the distance between the second upper edge (31) of the lower smoke baffle (3) and the first lower edge (22) of the upper smoke baffle (2) is greater than the distance between the second lower edge (32) of the lower smoke baffle (3) and the lower side of the smoke inlet (11).

4. The range hood according to claim 2, characterized in that: In the closed state, the first lower edge (22) of the upper smoke baffle (2) is opposite to, adjacent to or in contact with the second upper edge (31) of the lower smoke baffle (3), and the second lower edge (32) of the lower smoke baffle (3) is opposite to, adjacent to or in contact with the lower side of the smoke inlet (11).

5. The range hood according to claim 4, characterized in that: The first upper edge (21) of the upper smoke baffle (2) is adjacent to or in contact with the upper side edge of the smoke inlet (11) in both the closed state and the open state.

6. The range hood according to claim 2, characterized in that: The front side wall (10) of the housing (1) is inclined forward from bottom to top; When in the open state, the upper smoke baffle (2) tilts forward from bottom to top.

7. The range hood according to claim 2, characterized in that: The distance between the first upper edge (21) and the first lower edge (22) of the upper smoke baffle (2) is smaller than the distance between the second upper edge (31) and the second lower edge (32) of the lower smoke baffle (3).

8. The range hood according to any one of claims 1 to 7, characterized in that: The driving mechanism (4) is arranged to synchronously drive the upper smoke baffle (2) and the lower smoke baffle (3) to rotate in the same direction and at the same angle to the closed state or the open state.

9. The range hood according to claim 8, characterized in that: The upper smoke baffle (2) is constrained on the housing (1) via a first rotating shaft, and the central axis of the first rotating shaft is the first axis (20); The lower smoke baffle (3) is constrained on the housing (1) via a second rotating shaft, and the central axis of the second rotating shaft is the second axis (30); The output end of the driving mechanism (4) acts on the first rotating shaft and the second rotating shaft.

10. The range hood according to claim 9, characterized in that: The driving mechanism (4) comprises: Motor (40); A driving gear (43) coaxially connected to the output shaft of the motor (40); A first chain (41) is wound around the outer periphery of the driving gear (43) and the first driven gear coaxially connected to the first rotating shaft, and meshes with the driving gear (43) and the first driven gear; The second chain (42) is wound around the outer periphery of the driving gear (43) and the second driven gear coaxially connected to the second rotating shaft, and meshes with the driving gear (43) and the second driven gear.

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